Sampling the Waterhemp (Amaranthus tuberculatus) Genome Using Pyrosequencing Technology

Weed Science ◽  
2009 ◽  
Vol 57 (5) ◽  
pp. 463-469 ◽  
Author(s):  
Ryan M. Lee ◽  
Jyothi Thimmapuram ◽  
Kate A. Thinglum ◽  
George Gong ◽  
Alvaro G. Hernandez ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Large Scale ◽  
Ecological Model ◽  
Average Length ◽  
Science Research ◽  
Complete Sequence ◽  
Next Generation ◽  
Next Generation Sequencing Technology ◽  
Sequencing Technologies ◽  
Generation Sequencing

Recent advances in sequencing technologies (next-generation sequencing) offer dramatically increased sequencing throughput at a lower cost than traditional Sanger sequencing. This technology is changing genomics research by allowing large scale sequencing experiments in nonmodel systems. Waterhemp is an important weed in the midwestern United States with characteristics that makes it an interesting ecological model. However, very few genomic resources are available for this species. One half of a 70 by 75 picotiter plate of 454-pyrosequencing was performed on total DNA isolated from waterhemp, generating 158,015 reads of an average length of 271 bp, or a total of nearly 43 Mbp of sequence. Included in this sequence was a nearly complete sequence of the chloroplast genome, sequences of several important herbicide resistance genes, leads for simple sequence repeat (SSR) markers, and a sampling of the repeated elements (e.g., transposons) present in this species. Here we present the waterhemp genomic data gleaned from this sequencing experiment and illustrate the value of next-generation sequencing technology to weed science research.

scholarly journals Next-Generation Sequencing Technologies in Blood Group Typing

2019 ◽  
Vol 47 (1) ◽  
pp. 4-13 ◽  
Author(s):  
Daniel Fürst ◽  
Chrysanthi Tsamadou ◽  
Christine Neuchel ◽  
Hubert Schrezenmeier ◽  
Joannis Mytilineos ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Blood Group ◽  
Large Scale ◽  
Cost Effective ◽  
Molecular Testing ◽  
Blood Group Antigens ◽  
Next Generation ◽  
Sequencing Technologies ◽  
Blood Group Typing ◽  
Generation Sequencing

Sequencing of the human genome has led to the definition of the genes for most of the relevant blood group systems, and the polymorphisms responsible for most of the clinically relevant blood group antigens are characterized. Molecular blood group typing is used in situations where erythrocytes are not available or where serological testing was inconclusive or not possible due to the lack of antisera. Also, molecular testing may be more cost-effective in certain situations. Molecular typing approaches are mostly based on either PCR with specific primers, DNA hybridization, or DNA sequencing. Particularly the transition of sequencing techniques from Sanger-based sequencing to next-generation sequencing (NGS) technologies has led to exciting new possibilities in blood group genotyping. We describe briefly the currently available NGS platforms and their specifications, depict the genetic background of blood group polymorphisms, and discuss applications for NGS approaches in immunohematology. As an example, we delineate a protocol for large-scale donor blood group screening established and in use at our institution. Furthermore, we discuss technical challenges and limitations as well as the prospect for future developments, including long-read sequencing technologies.

scholarly journals Next Generation Sequencing Technology in the Clinic and Its Challenges

Cancers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1751
Author(s):  
Lau K. Vestergaard ◽  
Douglas N. P. Oliveira ◽  
Claus K. Høgdall ◽  
Estrid V. Høgdall
Keyword(s):  
Next Generation Sequencing ◽  
Large Data ◽  
Data Sets ◽  
Next Generation ◽  
Biological Drugs ◽  
Next Generation Sequencing Technology ◽  
Bioinformatic Tools ◽  
Sequencing Technologies ◽  
Genome Complexity ◽  
Generation Sequencing

Data analysis has become a crucial aspect in clinical oncology to interpret output from next-generation sequencing-based testing. NGS being able to resolve billions of sequencing reactions in a few days has consequently increased the demand for tools to handle and analyze such large data sets. Many tools have been developed since the advent of NGS, featuring their own peculiarities. Increased awareness when interpreting alterations in the genome is therefore of utmost importance, as the same data using different tools can provide diverse outcomes. Hence, it is crucial to evaluate and validate bioinformatic pipelines in clinical settings. Moreover, personalized medicine implies treatment targeting efficacy of biological drugs for specific genomic alterations. Here, we focused on different sequencing technologies, features underlying the genome complexity, and bioinformatic tools that can impact the final annotation. Additionally, we discuss the clinical demand and design for implementing NGS.

scholarly journals NEXT GENERATION SEQUENCING TECHNOLOGIES TOWARDS EXPLORATION OF MEDICINAL PLANTS

2021 ◽  
Vol 9 (4) ◽  
pp. 507-516
Author(s):  
Sunanya Das ◽  
◽  
Rukmini Mishra ◽  
Keyword(s):  
Next Generation Sequencing ◽  
Medicinal Plants ◽  
Large Scale ◽  
Plant Cover ◽  
Next Generation ◽  
Sequencing Technologies ◽  
Medicinal Value ◽  
Modern Biotechnology ◽  
Next Generation Sequencing Ngs ◽  
Generation Sequencing

With the ever-increasing population, the plant cover is decreasing at an alarming rate. The medicinal plants are most affected by this because they are present in the last tier of cultivation. Let it be pharmaceutical companies or people using it for herbalism, medicinal plants have been exploited without getting a chance to flourish in their natural environment. Modern biotechnology acts as a bridge between the cultivation and utilization of medicinal plants. Next Generation Sequencing (NGS) technology which is a decade old but emerging field helps to unveil the importance of medicinal plants. Thus, it paves the way for sustenance of medicinal plants by molecular breeding, micropropagation, large-scale tissue culture, and other methods to conserve the plants with great medicinal value. Various NGS technologies can be found in the market like Ilumina, PacBio, Ion Torrent, and others. The present review will summarize the NGS technologies and their potential use to study the genomes, transcriptome, epigenome, and interactome of medicinal plants towards the identification of bioactive compounds.

scholarly journals Next-generation sequencing technology in relation to our understanding and tackling of Antimicrobial Resistance [Tecnología de secuenciación de próxima generación en relación con nuestra comprensión y lucha contra la resistencia a los antimicrobianos]

2019 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Roxana Guillen
Keyword(s):  
Next Generation Sequencing ◽  
Antimicrobial Resistance ◽  
Next Generation ◽  
Sequencing Technology ◽  
Antibiotic Resistant ◽  
Next Generation Sequencing Technology ◽  
Molecular Assays ◽  
Sequencing Technologies ◽  
Very High ◽  
Generation Sequencing

Sequencing technologies have suffered over the last few years improvements in its performance, Next-generation Sequencing is being used more frequently to control infectious diseases, to know and anticipate antimicrobial resistance (AMR) and in surveillance controls against possible infectious outbreaks. Molecular assays used to detect pathogenic or antibiotic resistant agents take a lot of time and effort, and often enough information is not collected to make decisions. Next- generation sequencing appears to elucidate in the least time possible the whole DNA sequence and provide us with enough data to know resistance, virulence and typing that can be analyzed and a great help in research and decision making. NGS is a very promising technology, in order for it to be used extensively, requires the development of data analysis platforms and reduction of trials costs that still is very high for a massive use.

Next-Generation Sequencing: An Emerging Tool for Drug Designing

2019 ◽  
Vol 25 (31) ◽  
pp. 3350-3357 ◽  
Author(s):  
Pooja Tripathi ◽  
Jyotsna Singh ◽  
Jonathan A. Lal ◽  
Vijay Tripathi
Keyword(s):  
Next Generation Sequencing ◽  
High Throughput ◽  
Large Scale ◽  
Massively Parallel Sequencing ◽  
Genomic Research ◽  
Biological Research ◽  
Next Generation ◽  
Human Welfare ◽  
Drug Designing ◽  
Generation Sequencing

Background: With the outbreak of high throughput next-generation sequencing (NGS), the biological research of drug discovery has been directed towards the oncology and infectious disease therapeutic areas, with extensive use in biopharmaceutical development and vaccine production. Method: In this review, an effort was made to address the basic background of NGS technologies, potential applications of NGS in drug designing. Our purpose is also to provide a brief introduction of various Nextgeneration sequencing techniques. Discussions: The high-throughput methods execute Large-scale Unbiased Sequencing (LUS) which comprises of Massively Parallel Sequencing (MPS) or NGS technologies. The Next geneinvolved necessarily executes Largescale Unbiased Sequencing (LUS) which comprises of MPS or NGS technologies. These are related terms that describe a DNA sequencing technology which has revolutionized genomic research. Using NGS, an entire human genome can be sequenced within a single day. Conclusion: Analysis of NGS data unravels important clues in the quest for the treatment of various lifethreatening diseases and other related scientific problems related to human welfare.

A Novel Method for Microsatellite Instability Detection by Liquid Biopsy Based on Next- Generation Sequencing

2020 ◽  
Vol 15 ◽  
Author(s):  
Zheng Jiang ◽  
Hui Liu ◽  
Siwen Zhang ◽  
Jia Liu ◽  
Weitao Wang ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Microsatellite Instability ◽  
Liquid Biopsy ◽  
Tumor Tissue ◽  
High Sensitivity ◽  
Next Generation ◽  
Tissue Samples ◽  
Next Generation Sequencing Technology ◽  
Medication Selection ◽  
Generation Sequencing

Background: Microsatellite instability (MSI) is a prognostic biomarker used to guide medication selection in multiple cancers, such as colorectal cancer. Traditional PCR with capillary electrophoresis and next-generation sequencing using paired tumor tissue and leukocyte samples are the main approaches for MSI detection due to their high sensitivity and specificity. Currently, patient tissue samples are obtained through puncture or surgery, which causes injury and risk of concurrent disease, further illustrating the need for MSI detection by liquid biopsy. Methods: We propose an analytic method using paired plasma/leukocyte samples and MSI detection using next-generation sequencing technology. Based on the theoretical progress of oncogenesis, we hypothesized that the microsatellite site length in plasma equals the combination of the distribution of tumor tissue and leukocytes. Thus, we defined a window-judgement method to identify whether biomarkers were stable. Results: Compared to traditional PCR as the standard, we evaluated three methods in 20 samples (MSI-H:3/MSS:17): peak shifting method using tissue vs. leukocytes, peak shifting method using plasma vs. leukocytes, and our method using plasma vs. leukocytes. Compared to traditional PCR, we observed a sensitivity of 100%, 0%, and 100%, and a specificity of 100.00%, 94.12%, and 88.24%, respectively. Conclusion: Our method has the advantage of possibly detecting MSI in a liquid biopsy and provides a novel direction for future studies to increase the specificity of the method.

Molecular marker information from de novo assembled transcriptomes of chilli pepper (Capsicum annuum L.) varieties based on next-generation sequencing technology

2014 ◽  
Vol 12 (S1) ◽  
pp. S83-S86 ◽  
Author(s):  
Yul-Kyun Ahn ◽  
Swati Tripathi ◽  
Young-Il Cho ◽  
Jeong-Ho Kim ◽  
Hye-Eun Lee ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Next Generation Sequencing ◽  
De Novo ◽  
Transcriptome Assembly ◽  
Sequence Variant ◽  
Nucleotide Polymorphisms ◽  
Next Generation ◽  
Chilli Pepper ◽  
Next Generation Sequencing Technology ◽  
Generation Sequencing

Next-generation sequencing technique has been known as a useful tool for de novo transcriptome assembly, functional annotation of genes and identification of molecular markers. This study was carried out to mine molecular markers from de novo assembled transcriptomes of four chilli pepper varieties, the highly pungent ‘Saengryeg 211’ and non-pungent ‘Saengryeg 213’ and variably pigmented ‘Mandarin’ and ‘Blackcluster’. Pyrosequencing of the complementary DNA library resulted in 361,671, 274,269, 279,221, and 316,357 raw reads, which were assembled in 23,607, 19,894, 18,340 and 20,357 contigs, for the four varieties, respectively. Detailed sequence variant analysis identified numerous potential single-nucleotide polymorphisms (SNPs) and simple sequence repeats (SSRs) for all the varieties for which the primers were designed. The transcriptome information and SNP/SSR markers generated in this study provide valuable resources for high-density molecular genetic mapping in chilli pepper and Quantitative trait loci analysis related to fruit qualities. These markers for pepper will be highly valuable for marker-assisted breeding and other genetic studies.

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